Efficient inverted quantum-dot light-emitting devices with TiO2/ZnO bilayer as the electron contact layer.

@article{Xu2014EfficientIQ,
  title={Efficient inverted quantum-dot light-emitting devices with TiO2/ZnO bilayer as the electron contact layer.},
  author={Wei Xu and Wenyu Ji and Pengtao Jing and Xi Yuan and Y Andrew Wang and Weidong Xiang and Jialong Zhao},
  journal={Optics letters},
  year={2014},
  volume={39 3},
  pages={426-9}
}
We have demonstrated an efficient inverted CdSe/CdS/ZnS core/shell quantum-dot light-emitting device (QD-LED) using a solution-processed sol-gel TiO2 and ZnO nanoparticle composite layer as an electron-injection layer with controllable morphology and investigated the electroluminescence mechanism. The introduction of the ZnO layer can lead to the formation of spin-coated uniform QD films and fabrication of high-luminance QD-LEDs. The TiO2 layer improves the balance of charge injection due to… CONTINUE READING